Sell trial frame

详情

Usages It is suitable for eyesight examination in spectacles shops, department of ophthalmology in hospitals, schools and enterprises. Main Technical Indexes 1, Range of PD adjustments: PD of both eyes: *8~*0mm; Left or right PD: *4~*0mm; Minimum Calibration Value: 1mm. 2, Axial calibration on each disc: Left disc: **0~0~**5, Right disc: *5~**0~*0, Axial calibration increases counter clockwise along the lens frame axis, and the calibration distance is 5. 3, Inner diameter of lens frame:? 2.5mm 4, The Number of lens which can be inserted into left or right lens frame simultaneously: 4 pieces 5, Degree of lens rotating around optical axis in the lens frame: **0 6, Non-parallelism degree between lens&#**9; optical axis and lens frame&#**9;s geometric axis: D2.5 7, Non-concentricity between lens &#**9; optical center and lens frame geometric center: D0.5 mm 8, Displacement of lens in relation to position of lens frame geometric center: D0.3 mm 9, Range of nose pad adjustment: Length: 0~*4mm; Angle: 0~*0. *0, Range of left or right lens frame leg&#**9;s length adjustment: *8mm ~ **5mm *1, Maximum interval between left and right lens frame legs: **0 mm *2, Weight: *2g We also have titanium trial frame for your choice.